摘要
城市建设中,基坑内的粉尘对其内部及周边环境造成了巨大影响。以大汉城路的建筑基坑为研究对象,根据与工作区域的距离选定了3个粉尘浓度监测点,分别对TSP、PM_(2.5)、PM_(10)浓度进行监测,总共进行了为期3 d的数据收集。结果表明:TSP浓度随距离增加逐渐减小,其扩散范围较小,而PM_(2.5)和PM_(10)浓度随距离变化较小,更容易受涡旋影响积聚且不易沉降,扩散范围较大。相对TSP而言,PM_(2.5)和PM_(10)对环境危害更为严重且更难以治理,应及时采取行之有效的技术方案进行防控。
In urban construction,dust in the foundation pit has a huge impact on its internal and surrounding environment.Taking the building foundation pit on Daehancheng Road as research object,according to distance from the working area,three dust concentration monitoring points are selected to monitor concentrations of TSP,PM_(2.5),and PM_(10) respectively,and a total of three days of data collection have been carried out.Through analyzing the data,it is concluded that TSP concentration gradually decreases with increasing distance,and its diffusion range is smaller,while the PM_(2.5) and PM_(10) concentrations change less with distance,dust particles are more susceptible to vortex accumulation and are not easy to settle,and the diffusion range is larger.Compared with TSP,PM_(2.5) and PM_(10) are more serious to environment and more difficult to control.Effective technical solutions should be adopted in time for prevention and control.
出处
《建筑技术开发》
2021年第15期152-154,共3页
Building Technology Development
关键词
城市基坑
数据监测
粉尘浓度
urban foundation pit
data monitoring
dust concentration
